meta-phosphor: Update phosphor-fan python depends

Update needed to handle transition to python3 so the proper version of
python dependencies are picked up.

Change-Id: I51719b0ae5a18fccaa64de7ebe274806a8eebd8d
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/recipes-phosphor/fans/phosphor-fan_git.bb b/recipes-phosphor/fans/phosphor-fan_git.bb
index 0e12d44..38a6fb1 100644
--- a/recipes-phosphor/fans/phosphor-fan_git.bb
+++ b/recipes-phosphor/fans/phosphor-fan_git.bb
@@ -14,8 +14,8 @@
 
 # Common build dependencies
 DEPENDS += "autoconf-archive-native"
-DEPENDS += "python-pyyaml-native"
-DEPENDS += "python-mako-native"
+DEPENDS += "${PYTHON_PN}-pyyaml-native"
+DEPENDS += "${PYTHON_PN}-mako-native"
 DEPENDS += "sdbusplus"
 DEPENDS += "sdbusplus-native"
 DEPENDS += "sdeventplus"